I think this is where there is room for healthy debate about the intent of the film. I agree with your read -- the film absolutely should not be interpreted as an authoritative factual inquiry into "what really happened." I would not be able to enjoy the film otherwise because the conspiracy...
Oh it’s nonsense, but it’s so well-made and formally inventive that the script can be forgiven. The editing alone makes it a pantheon film. As someone in another thread mentioned, there’s no Oppenheimer without JFK.